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    <title>Document</title>
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    <!-- 数组去重 -->
    <script type="text/javascript">
        var arr = [1, 1, 1, 2, 2, 3, 4, 5, 6, 3, 4, 2, 4, 1, ];
        var newArr = []
        for (var i = 0; i < arr.length; i++) {
            if (newArr.indexOf(arr[i]) === -1) {
                newArr.push(arr[i])
            }
        }
        console.log(newArr);
    </script>
</body>

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